订单追踪/已采购订单：新增发货单的“发货时间”设置不可选择小于当前日期

src/views/OrderTrack/purAdd.vue

@@ -30,7 +30,7 @@
           <el-input v-model="formParam.shipment_number" placeholder="请输入物流单号"></el-input>
         </el-form-item>
         <el-form-item label="发货时间：" prop="delivery_time">
-          <el-date-picker v-model="formParam.delivery_time" type="date" placeholder="请选择发货时间" value-format="yyyy-MM-dd"></el-date-picker>
+          <el-date-picker v-model="formParam.delivery_time" type="date" placeholder="请选择发货时间" value-format="yyyy-MM-dd" :picker-options="pickerOption"></el-date-picker>
         </el-form-item>
         <el-form-item label="订货公司：">
           <span v-if="purOrderDetail.purchase_info">{{ purOrderDetail.purchase_info.company_name }}</span>
@@ -78,6 +78,11 @@ export default {
       purOrderDetail: {},//基本信息,发货信息
       purchase_uid: '',
       multipleSelection: [],//选中的数据
+      pickerOption:{
+        disabledDate(time) {
+          return time.getTime() < Date.now() - 8.64e7;
+        }
+      },
       rules: {
         shipping_id: [{
           required: true,